CN112198378B - Slip ring fault detection device and method - Google Patents
Slip ring fault detection device and method Download PDFInfo
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- CN112198378B CN112198378B CN202010927497.7A CN202010927497A CN112198378B CN 112198378 B CN112198378 B CN 112198378B CN 202010927497 A CN202010927497 A CN 202010927497A CN 112198378 B CN112198378 B CN 112198378B
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Abstract
The application relates to a slip ring fault detection device and a method, wherein a transmitting module transmits scanning data, a coupling transmission module couples the scanning data from a data transmitting port of a slip ring to a data receiving port, and a receiving module receives the scanning data. In the data processing module, a serial-parallel conversion branch circuit converts part of scanning data into a second digital signal, a power detection branch circuit converts the other part of scanning data into a third digital signal, an integration judgment branch circuit receives the second digital signal and the third digital signal, integrates the second digital signal and the third digital signal into a first digital signal, and judges whether the relative position between a data sending port and a data receiving port is within an allowable range according to the first digital signal, so that the operation state of the slip ring is judged according to the relative position. Therefore, the slip ring fault detection device and the slip ring fault detection method can find slip ring faults in time to remind workers to overhaul the slip ring, and stability of image equipment where the slip ring is located is improved.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a slip ring fault detection device and method.
Background
Slip rings in Computed Tomography (CT) are one of the core components of CT imaging systems. For imaging, the CT front-end detector and electronics need to rotate around the aperture center at high speed during scanning, and the high-speed digital signals are interfaced in a non-contact manner. The data transmitting port is annular (shaped like a rotating part of a slip ring), is connected with front-end electronics and rotates at a high speed, and the data receiving port is a metal plane with a small size.
The distance between the data transmitting port and the data receiving port is usually kept about 1-2 mm when the slip ring rotates. If the distance between the data sending port and the data receiving port is too close in the rotating process, the risk of mechanical interference exists; if the distance between the data transmission port and the data reception port is too long, signal quality is affected, and the error rate is increased. However, the conventional scheme cannot determine the distance between the data transmitting port and the data receiving port, thereby causing a decrease in the stability of the image device.
Disclosure of Invention
Accordingly, it is necessary to provide a slip ring failure detection apparatus and method for solving the problem of the stability reduction of the imaging device.
The application provides a slip ring fault detection device, includes:
a transmitting module for transmitting the scanning data;
the coupling transmission module is electrically connected with the transmitting module and is used for coupling and transmitting the scanning data from a data transmitting port of the slip ring to a data receiving port;
the receiving module is electrically connected with the coupling transmission module and is used for receiving the scanning data; and
the data processing module is electrically connected with the receiving module and used for generating a first digital signal according to the scanning data; the data processing module comprises:
the input end of the serial-parallel conversion branch circuit is electrically connected with the output end of the receiving module and is used for converting part of the scanning data into a second digital signal;
the input end of the power detection branch circuit is electrically connected with the output end of the receiving module and is used for converting the other part of the scanning data into a third digital signal; and
and the input end of the integration judgment branch is respectively and electrically connected with the output end of the serial-parallel conversion branch and the output end of the power detection branch, and is used for receiving the second digital signal and the third digital signal, integrating the second digital signal and the third digital signal into the first digital signal, and judging the running state of the slip ring according to the first digital signal.
In one embodiment, the serial-to-parallel conversion branch comprises:
the input end of the third amplifier is electrically connected with the output end of the receiving module and is used for amplifying the scanning data; and
and the input end of the serial-parallel converter is electrically connected with the output end of the third amplifier and is used for converting the amplified scanning data into the second digital signal.
In one embodiment, the power detection branch comprises:
the input end of the fourth amplifier is electrically connected with the output end of the receiving module and is used for amplifying the scanning data;
the input end of the power detector is electrically connected with the output end of the fourth amplifier and is used for acquiring power information in the amplified scanning data; and
and the input end of the analog-to-digital converter is electrically connected with the output end of the power detector and is used for converting the power information into the third digital signal.
In one embodiment, the fourth amplifier is a radio frequency amplifier or a follower.
In one embodiment, the integration determination branch comprises:
the integration module is electrically connected with the serial-parallel conversion branch and the power detection branch respectively and is used for receiving the second digital signal and the third digital signal and integrating the second digital signal and the third digital signal into the first digital signal;
and the judging module is electrically connected with the integration module and used for receiving the first digital signal and judging the running state of the slip ring according to the first digital signal.
In one embodiment, the second digital signal is a parallel signal.
In one embodiment, the third digital signal is an envelope signal.
Based on the same inventive concept, the application also provides a slip ring fault detection method, which comprises the following steps:
transmitting scanning data, coupling and transmitting the scanning data from a data transmitting port of the slip ring to a data receiving port, and receiving the scanning data;
further comprising:
converting part of the scanning data into a second digital signal;
converting another part of the scanning data into a third digital signal;
integrating the second digital signal and the third digital signal into a first digital signal;
and judging the running state of the slip ring according to the first digital signal.
In one embodiment, the converting the portion of the scan data into the second digital signal includes:
amplifying the portion of the scan data;
and converting the amplified part of the scanning data into the second digital signal.
In one embodiment, the converting another part of the scan data into a third digital signal includes:
amplifying another portion of the scan data;
acquiring power information in the other amplified part of the scanning data;
and converting the power information into the third digital signal.
In the slip ring fault detection device and method, the transmitting module transmits scanning data, the coupling transmission module couples the scanning data from the data transmitting port of the slip ring to the data receiving port, the receiving module receives the scanning data, and the data processing module generates a first digital signal according to the scanning data. The data processing module comprises a serial-parallel conversion branch, a power detection branch and an integration judgment branch. The serial-parallel conversion branch circuit converts part of scanning data into a second digital signal, the power detection branch circuit converts the other part of scanning data into a third digital signal, the integration judgment branch circuit receives the second digital signal and the third digital signal, integrates the second digital signal and the third digital signal into a first digital signal, and judges whether the relative position between the data sending port and the data receiving port is within an allowable range according to the first digital signal, so that the operation state of the slip ring is judged according to the relative position. Therefore, the slip ring fault detection device and the slip ring fault detection method can find slip ring faults in time to remind workers to overhaul the slip ring, and stability of image equipment where the slip ring is located is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic connection structure diagram of a slip ring fault detection apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a connection structure of another slip ring fault detection apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a system in which a slip ring fault detection apparatus according to an embodiment of the present disclosure is located;
fig. 4 is a schematic waveform diagram of a first digital signal in a slip ring fault detection apparatus according to an embodiment of the present application.
Description of the reference numerals
100. Slip ring fault detection means; 10. a transmitting module; 110. a first amplifier; 20. a coupling transmission module; 30. a receiving module; 310. a matching circuit; 311. a matching network circuit; 312. a second amplifier; 40. a data processing module; 410. a serial-to-parallel conversion branch; 411. a third amplifier; 412. a serial-to-parallel converter; 420. a power detection branch; 421. a fourth amplifier; 422. a power detector; 423. an analog-to-digital converter; 430. integrating the judgment branch; 431. an integration module; 432. and a judging module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present application provides a slip ring fault detection apparatus 100. The slip ring fault detection apparatus 100 includes a transmission module 10, a coupling transmission module 20, a reception module 30, and a data processing module 40. The transmitting module 10 is used for transmitting scan data. The coupling and transmitting module 20 is electrically connected to the transmitting module 10, and is used for coupling and transmitting the scanning data from the data transmitting port of the slip ring to the data receiving port. The receiving module 30 is electrically connected to the coupling and transmitting module 20 for receiving the scan data. The data processing module 40 is electrically connected to the receiving module 30 and is configured to generate a first digital signal according to the scan data. The data processing module 40 includes a serial-to-parallel conversion branch 410, a power detection branch 420 and an integration judgment branch 430. A serial-to-parallel conversion branch 410, an input terminal of which is electrically connected to the output terminal of the receiving module 30, is used for converting the partial scan data into a second digital signal. And a power detection branch 420, an input end of which is electrically connected to the output end of the receiving module 30, for converting another part of the scan data into a third digital signal. And an integration judging branch 430, an input end of which is electrically connected to the output end of the serial-parallel conversion branch 410 and the output end of the power detection branch 420, respectively, for receiving the second digital signal and the third digital signal, integrating the second digital signal and the third digital signal into a first digital signal, and judging an operating state of the slip ring according to the first digital signal.
In one embodiment, the transmitting Module 10(Tx Module) is responsible for receiving high-speed digital signals, i.e., scan data, from the probe and Front End electronics (Front End). The high-speed digital signal includes data required for image reconstruction by the image device and slip ring fault detection by the slip ring fault detection apparatus 100. In this embodiment, the speed of the high-speed digital signal is usually 1 to 10Gbps, and the signal can be regarded as a microwave radio frequency signal analog small signal.
Referring also to fig. 2, in one embodiment, the transmitting module 10 includes a first amplifier 110, and the first amplifier 110 is used for amplifying and transmitting a portion of the scan data. In this embodiment, the first amplifier 110 may be a radio frequency amplifier. The scanning data can be output to a data transmitting port of the slip ring after being amplified by the radio frequency amplifier. Since the transmitting module 10 receives the scanning data from the detector and the front-end electronics, the scanning data is amplified, which is beneficial for the coupling transmission module 20 to couple the scanning data from the data transmitting port of the slip ring to the data receiving port, so as to ensure the signal strength of the scanning data carried in the receiving module 30, thereby improving the accuracy of the slip ring fault judgment by the slip ring fault detection apparatus 100.
Referring to fig. 3, in one embodiment, the coupling transmission module 20 may be used as an equivalent capacitance (C) between a data transmitting port and a data receiving port of the slip ring, where the equivalent capacitance may be C ═ epsilon r ε 0 And (5) S/d. Wherein epsilon r Is a relative dielectric constant,. epsilon 0 S is the plate area of the data transmitting port and the data receiving port, and d is the vertical distance between the data transmitting port and the data receiving port. Since the medium between the data transmission port and the data reception port is generally air, epsilon r 1. As can be seen from the above, the longer the mechanical distance between the data transmission port and the data reception port, the smaller the plate area between the data transmission port and the data reception port, the smaller the capacitance value C of the equivalent capacitor, the larger the reactance value, and the lower the amplitude of the coupling signal. Therefore, whether the mechanical distance between the data sending port and the data receiving port and the area of the flat plate change or not can be judged according to the first digital signal obtained subsequently.
In one embodiment, the data transmitting port of the slip Ring may be the slip Ring port (Tx Ring) labeled in fig. 3, and the data receiving port of the slip Ring may be the receiving Plate port (Fixed Rx Plate) labeled in fig. 3. In this embodiment, the slip ring port is electrically connected to the transmitting module 10, the receiving plate port is electrically connected to the receiving module 30, and the coupling transmission module 20 may be an equivalent capacitor between the slip ring port and the receiving plate port. The transmitting module 10 may transmit the scan data to the slip ring port, the coupling transmission module 20 may couple the scan data of the slip ring port to the receiving flat port, and the receiving module 30 receives the scan data via the receiving flat port. In addition, the ground port is grounded via a grounded Brush (Fixed Brush), which is responsible for providing a common functional ground, i.e. a reference ground or a return ground, for the entire system link.
In one embodiment, the receiving module 30 may include a matching circuit 310. And the matching circuit 310, an input end of which is electrically connected with the coupling transmission module 20, is used for performing impedance matching with the coupling transmission module 20 and amplifying the scanning data. In one embodiment, the matching circuit 310 includes a matching network circuit 311 and a second amplifier 312. And the matching network circuit 311, an input end of which is electrically connected to the coupling transmission module 20, is used for performing impedance matching with the coupling transmission module 20. A second amplifier 312, an input terminal of which is electrically connected to the output terminal of the matching network circuit, for amplifying the scan data.
In one embodiment, the matching network circuit 311(Match) may be used to Match the rf link with the coupling transmission module 20, ensuring that the power of the scan data is transmitted to the second amplifier 312 with maximum efficiency. In this embodiment, the second amplifier 312 may be a radio frequency amplifier. It will be appreciated that there will be a significant loss of scan data after passing through the coupling transmission module 20 and the matching network circuit 311. Therefore, the second amplifier 312 can amplify the scan data to improve the accuracy of the subsequent signal processing.
In one embodiment, the input serial-to-parallel conversion branch 410 may convert part of the scan data into a parallel signal, i.e., a second digital signal, so as to facilitate transmission and processing of subsequent data. The power detection branch 420 may convert another portion of the scan data into an envelope signal, i.e., a third digital signal, that includes power information. The integration judgment branch 430 receives the second digital signal and the third digital signal, integrates the second digital signal and the third digital signal into a first digital signal, and judges the operation state of the slip ring according to the first digital signal. Therefore, the data processing module 40 may determine whether the distance between the data sending port and the data receiving port of the slip ring is too close or too far, or whether the plate areas of the data sending port and the data receiving port are changed by determining whether the waveform of the first digital signal exceeds the preset upper and lower threshold values, so as to determine the operation state of the slip ring, that is, determine whether the slip ring has a fault. When the slip ring is judged to have faults, the working personnel can be reminded of overhauling the slip ring in time, and therefore the stability of the image equipment where the slip ring is located is improved.
In one embodiment, data acquired by a detector and front-end electronics of Computed Tomography (CT) is raw data, so a data preprocessing circuit may be further disposed in the data processing module 40 to perform digital signal preprocessing such as data compression, decompression, filtering or packing on the raw data.
In the slip ring fault detection device 100, the transmitting module 10 transmits scanning data, the coupling transmission module 20 couples the scanning data from a data transmitting port of the slip ring to a data receiving port, the receiving module 30 receives the scanning data, and the data processing module 40 generates a first digital signal according to the scanning data. The data processing module 40 includes a serial-to-parallel conversion branch 410, a power detection branch 420, and an integration judgment branch 430. The serial-parallel conversion branch 410 converts part of the scan data into a second digital signal, the power detection branch 420 converts another part of the scan data into a third digital signal, the integration judgment branch 430 receives the second digital signal and the third digital signal, integrates the second digital signal and the third digital signal into a first digital signal, and judges whether the relative position between the data transmission port and the data reception port is within an allowable range according to the first digital signal, thereby judging the operation state of the slip ring. Therefore, the slip ring fault detection device 100 can find slip ring faults in time to remind workers to overhaul the slip ring, and stability of image equipment where the slip ring is located is improved.
In one embodiment, the serial-to-parallel conversion branch 410 includes a third amplifier 411 and a serial-to-parallel converter 412. A third amplifier 411 having an input terminal electrically connected to the output terminal of the receiving module 30, for amplifying the scan data. A serial-to-parallel converter 412, an input terminal of which is electrically connected to an output terminal of the third amplifier 411, for converting the amplified scan data into a second digital signal.
In one embodiment, the third amplifier 411 may be one of a radio frequency amplifier, a follower, or a high speed comparator, so that the transition edge and swing of its output signal can be matched with the subsequent serial-to-parallel converter 412. Since the scanning Data output by the second amplifier 312 is a high frequency rf signal, which includes the original Data information collected by the front-end detector electronics and used for image reconstruction, a serial-to-parallel converter 412 is required to convert the input high-speed serial signal into a parallel digital signal (Data), i.e., to decode the original parallel Data for subsequent signal processing. In one embodiment, the second digital signal is a parallel signal.
In one embodiment, the power detection branch 420 includes a fourth amplifier 421, a power detector 422, and an analog-to-digital converter 423. And a fourth amplifier 421, an input end of which is electrically connected to the output end of the receiving module 30, for amplifying the scan data. A power detector 422, an input end of which is electrically connected to an output end of the fourth amplifier 421, for acquiring power information in the amplified scan data; an analog-to-digital converter 423 having an input electrically connected to the output of the power detector 422 is configured to convert the power information into a third digital signal.
In one embodiment, the other scan data output from the second amplifier 312 may enter the power detection branch 420 to obtain a voltage value representing the power of the high frequency rf signal, i.e., power information. In the power detection branch 420, a power detector 422 may convert the input scan data into an envelope signal, which may characterize the power of the scan data in real time. In this embodiment, the analog-to-digital converter 423(ADC) may output a voltage value in a digital domain, that is, an actual waveform of the envelope signal (profile), by performing digital-to-analog conversion on the third digital signal including the power information. In one embodiment, the third digital signal is an envelope signal.
In one embodiment, the fourth amplifier 421 may be a radio frequency amplifier or a follower, and the fourth amplifier 421 may be configured to adapt the output power of its signal to the input range of the subsequent power Detector 422(RMS Detector).
In one embodiment, the integration decision branch 430 includes an integration module 431 and a decision module 432. An integration module 431, electrically connected to the serial-to-parallel conversion branch 410 and the power detection branch 420, respectively, for receiving the second digital signal and the third digital signal, and integrating the second digital signal and the third digital signal into a first digital signal; and the judging module 432 is electrically connected to the integrating module 431, and is configured to receive the first digital signal and judge an operating state of the slip ring according to the first digital signal.
In one embodiment, the integration module 431 may integrate all the data by protocol packaging and upload to the determination module 432. In this embodiment, the determining module 432 may include a processor, and data processing software may be loaded in the processor to determine the operating state of the slip ring according to the preprocessed first digital signal. All data can include error information, temperature information or other electronic component information besides the original data including slip ring state information acquired by the detector and the front-end electronics. According to all data acquired by the detector and the front-end electronics, a monitoring module in the processor can monitor whether the running states of the slip ring and other electronic components are good or not in real time.
In one embodiment, the data acquired by the detector and the front-end electronics for imaging, i.e., the second digital signal, may be 16 bits. In addition, the envelope data, namely the third digital signal, which is acquired by the detector and the front-end electronics and used for representing the running state of the slip ring, can be 8 bits. In this embodiment, the 16-bit data used for imaging and the 8-bit data used for representing the slip ring operating state may be packed and integrated into 24-bit parallel data, that is, a first digital signal. The 24-bit parallel data is then encapsulated by a specific serial bus protocol and passed to the software of the processor or host computer over a uniform channel or protocol path (e.g., PCIe bus). Therefore, by providing the integration module 431, all data can be uploaded through a unified communication bus under the condition of sufficient bandwidth, and extra bus addition when the slip ring fault detection device 100 is used can be avoided, thereby saving resources.
Referring also to fig. 4, in one embodiment, the first digital signal including power information is refreshed or superimposed once in fig. 4 according to one cycle of the rotation of the CT slip ring rotor, so as to reflect the actual operation state of the slip ring. The determining module 432 may monitor and predict the slip ring fault according to the actual curve (Real-Drift), and the upper and lower threshold values (TH _ H, TH _ L) of the actual curve. It is understood that the envelope curve, which includes power information, is a curve and statistical characterization of the operating conditions of the CT slip ring components. Therefore, the health degree of the running state of the slip ring, the fault risk and the trend of the slip ring can be quickly predicted according to the envelope curve comprising the power information, so that the slip ring can be conveniently overhauled, maintained and even replaced in advance, and the probability of error reporting and even downtime of the slip ring during scanning can be greatly reduced.
In one embodiment, the slip ring is rotated to the end position from the start position, and the slip ring is rotated to the end position. Since the fault point location is fixed, it will exceed the upper and lower threshold values at a relatively fixed time within each rotation cycle. Therefore, on the abscissa of fig. 4, a fault point or a fault region can be determined from the value of the abscissa corresponding to when the envelope curve exceeds the threshold.
In one embodiment, if the envelope curve including the power information jumps, it may be determined that an abscissa corresponding to the jump point or the area is a position where the fault point or the fault area is located. The envelope curve including the power information shows a continuous fluctuation without a jump (pulse or spike), indicating a deviation in the mechanically fixed concentricity. For example, if the actual envelope curve including the power information exceeds the upper threshold, it may indicate that the distance between the signal transmitting end and the signal receiving end of the slip ring is too close, and there is an interference risk; if the actual envelope curve including the power information exceeds the lower threshold, it can indicate that the distance between the slip ring signal transmitting end and the signal receiving end is too far, and the risk of deterioration of signal quality and error rate exists.
In one embodiment, the scenario in which the upper threshold is exceeded may be that the signal becomes abnormally large due to mechanical dimensional deviation or slip ring surface contamination. It should be noted that the deviation of the mechanical dimension has two failure directions, i.e., the distance d between the signal transmitting end electrode and the signal receiving end electrode increases or decreases. In this embodiment, if the distance d between the signal transmitting end electrode and the signal receiving end electrode is decreased, the capacitance value C of the equivalent capacitor becomes larger, the coupling signal becomes stronger, and the envelope curve including the power information may exceed the upper threshold. In another embodiment, if the distance d between the signal transmitting terminal electrode and the signal receiving terminal electrode increases, the capacitance C of the equivalent capacitor becomes smaller, the coupled signal becomes weaker, and the envelope curve including the power information may exceed the lower threshold. In addition, contamination of the surface of the slip ring can lead to a dielectric constant epsilon between the slip ring signal transmitter electrode and the signal receiver electrode r Becoming larger, in turn, causes the equivalent capacitance value C to become larger, thereby causing the coupled signal to become stronger, possibly causing the envelope curve including the power information to exceed the upper threshold.
In one embodiment, the scenario in which the lower threshold is exceeded may be that the signal abnormality caused by conductor breakage or oxidation on the surface of the slip ring is small. If the surface conductor of the slip ring is cracked or oxidized, the facing area S of the slip ring signal transmitting terminal electrode and the signal receiving terminal electrode is reduced, so that the capacitance value C of the equivalent capacitor is reduced, the coupling signal is weakened, and the envelope curve including the power information may exceed the lower threshold. According to the above, the abnormal operation state of the slip ring can be calculated according to the equivalent plate capacitance formula C ═ epsilon r ε 0 Parameter (. epsilon.) in S/d r And S, d) judging to improve the serviceability, the reliability and the user experience of the slip ring.
Based on the same inventive concept, the application also provides a slip ring fault detection method, which comprises the following steps:
step S10, emitting scanning data, coupling and transmitting the scanning data from a data sending port of the slip ring to a data receiving port, and receiving the scanning data;
step S20, converting the partial scan data into a second digital signal;
step S30, converting another part of scanning data into a third digital signal;
step S40, integrating the second digital signal and the third digital signal into a first digital signal;
and step S50, judging the running state of the slip ring according to the first digital signal.
It should be noted that steps S10 to S50 may correspond to any slip ring fault detection apparatus 100 in the foregoing embodiment, that is, any slip ring fault detection apparatus 100 in the foregoing embodiment may be used, and details are not repeated here.
In one embodiment, step S20, converting the partial scan data into a second digital signal includes:
step S210, amplifying the part scanning data;
in step S220, the amplified partial scan data is converted into a second digital signal.
In one embodiment, step S30, converting another portion of the scan data into a third digital signal includes:
step S310, amplifying another part of the scanning data;
step S320, acquiring power information in the other part of the amplified scanning data;
step S330, converting the power information into a third digital signal.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A slip ring fault detection apparatus comprising:
a transmitting module for transmitting the scanning data;
the coupling transmission module is electrically connected with the transmitting module and is used for coupling and transmitting the scanning data from a data transmitting port of a slip ring to a data receiving port, and the slip ring is a capacitive slip ring in the electronic computed tomography system;
the receiving module is electrically connected with the coupling transmission module and is used for receiving the scanning data; and
the data processing module is electrically connected with the receiving module and used for generating a first digital signal according to the scanning data; characterized in that the data processing module comprises:
the input end of the serial-parallel conversion branch circuit is electrically connected with the output end of the receiving module and is used for converting part of the scanning data into a second digital signal;
the input end of the power detection branch circuit is electrically connected with the output end of the receiving module and is used for converting the other part of the scanning data into a third digital signal; and
and the input end of the integration judgment branch is respectively and electrically connected with the output end of the serial-parallel conversion branch and the output end of the power detection branch, and is used for receiving the second digital signal and the third digital signal, integrating the second digital signal and the third digital signal into the first digital signal, and judging the running state of the slip ring according to the first digital signal.
2. Slip ring fault detection device according to claim 1, characterized in that the serial-to-parallel conversion branch comprises:
the input end of the third amplifier is electrically connected with the output end of the receiving module and is used for amplifying the scanning data; and
and the input end of the serial-parallel converter is electrically connected with the output end of the third amplifier and is used for converting the amplified scanning data into the second digital signal.
3. Slip ring fault detection arrangement according to claim 1, characterized in that the power detection branch comprises:
the input end of the fourth amplifier is electrically connected with the output end of the receiving module and is used for amplifying the scanning data;
the input end of the power detector is electrically connected with the output end of the fourth amplifier and is used for acquiring power information in the amplified scanning data; and
and the input end of the analog-to-digital converter is electrically connected with the output end of the power detector and is used for converting the power information into the third digital signal.
4. Slip ring fault detection device according to claim 3, characterized in that the fourth amplifier is a radio frequency amplifier or a follower.
5. Slip ring fault detection device according to claim 1, characterized in that the integrated judgment branch comprises:
the integration module is electrically connected with the serial-parallel conversion branch and the power detection branch respectively and is used for receiving the second digital signal and the third digital signal and integrating the second digital signal and the third digital signal into the first digital signal;
and the judging module is electrically connected with the integration module and used for receiving the first digital signal and judging the running state of the slip ring according to the first digital signal.
6. Slip ring fault detection device according to claim 1, characterized in that the second digital signal is a parallel signal.
7. Slip ring fault detection device according to claim 1, characterized in that the third digital signal is an envelope signal.
8. A slip ring fault detection method comprising:
transmitting scanning data, coupling and transmitting the scanning data from a data transmitting port of a slip ring to a data receiving port, and receiving the scanning data, wherein the slip ring is a capacitive slip ring in an electronic computer tomography system;
it is characterized by also comprising:
converting part of the scanning data into a second digital signal;
converting another part of the scanning data into a third digital signal;
integrating the second digital signal and the third digital signal into a first digital signal;
and judging the running state of the slip ring according to the first digital signal.
9. The slip ring fault detection method as claimed in claim 8, wherein said converting a portion of said scan data into a second digital signal comprises:
amplifying the portion of the scan data;
and converting the amplified part of the scanning data into the second digital signal.
10. Slip ring fault detection method according to claim 8, wherein said converting another part of said scan data into a third digital signal comprises:
amplifying another portion of the scan data;
acquiring power information in the other amplified part of the scanning data;
and converting the power information into the third digital signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010927497.7A CN112198378B (en) | 2020-09-07 | 2020-09-07 | Slip ring fault detection device and method |
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